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494  Mathematical Techniques of Fractional Order Systems


            16.5 CONCLUSIONS
            In this chapter, a chaotic system with seven terms has been studied. The sys-
            tem is different from a conventional system because it includes signum and
            exponential nonlinear terms. It is interesting that the system is special
            because there is the presence of an infinite number of equilibrium points. By
            using phase portraits, Poincare ´ map, bifurcation diagram, and Lyapunov
            exponents, we have investigated the system’s dynamics. We have observed
            chaos and coexisting attractors in such a system. In addition, we have pro-
            posed an adaptive control for antisynchronization of chaotic systems with
            infinite equilibria. Fractional order form of the system with infinite equilibria
            can exhibit chaotic and point attractors. Practical applications of the new sys-
            tem will be discovered in our future works.


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